The cable-stayed bridges are considered as the ideal solution to overcome the medium and large spans of up to over a thousand meters. In order to avoid too large for the thickness of the girder, is therefore the same type of cable-stayed, and therefore functions primarily as arc reticular three hinges upside down. The mooring system of the suspension is formed by two struts inclined slightly towards the accesses and backward with respect to the taxes of the girder, from the top part of which a double order of Forestays confluent on the girder. The mooring outside of the pylons was provided at 65 m distance from each of them.
The idea of supporting a beam with inclined ropes, the stays , is ancient: the medieval drawbridges and, much earlier, the peaks of the Egyptian ships, are an example. The first applications of this system in the construction of bridges, appeared since the XVII and XIX, respectively.